Ring traveler



. Septl, 1936. P. c-wENTwoRTH RING TRAVELER 2 Sheets-Sheet 1 Filed Oct. 22, 1935 ,M 31. 0 IM,

Sept l, 1936 P. c. wENTwoRTH l 2,052,735

RING TRAVELER Filed Oct. 22, 1935 2 Sheets- Sheet 2 v Patented Sept. 1, 1936 siren STATES PATENT FFIQE 6 Claims.

This invention relates to ring spinning or twisting travelers. Such travelers are used on a spinning or twisting ring having a horizontal ange.

For generations and up to the recent past the textile industry, so far as yarns werev concerned, has run more or less along staple lines. Such changes as were made were in the nature of seasonal changes. Consequently the machinery and equipment, including .the traveler, became more or less standardized.

Recently, however, drastic changes have taken place in the industry. Fashions began toV dominate the situation and these fashions, although in no way seasonal, nevertheless are continuously l under constant change. As a result the spinning o'f cotton yarns in a great multiplicity of styles, weights and twists has become the order` of the day. Moreover, the developm-ent ofsynthetic fibres such as articial silk and rayon and ,mi the increasing use of thesame has created new problems.

The revolutionary character of these changes has brought about a complete revolutionY in mill practices, especially in the traveler itself, which still remains the important or key factor in the entire set up.

In meeting these new demands and problems, the industry has sought to adapt or utilize the ring `principle in the spinning of worsteds, silks i and rayons. These yarns however, have a different action on the traveler than does cotton yarn. Rayon and silk are highly abrasive and have a pronounced abrasive action on the traveler. Worsted is also somewhat abrasive and moreover is quite bulky. Consequently, the traveler rides the ring differently according to the kind of yarn being spun. Moreover, with bulky yarn such as worsted and some of the coarser cottons, the clearance between the traveler and 40" the ring is greatly reduced.

Another factor in the operation of the traveier is the constant demand of the industry for higher spindle speeds. With higher spindle speeds the surface speed of the traveler is correspondingly increased and unless the traveler rides the ring in true balance at these increased speeds, imperfect'spinning and twisting results.

Ideally, the traveler should oat on the ring,

being so supported by th-e yarn as substantially to eliminate friction between the ring and traveier.

Likewise in meeting these new demands and problems the industry has turned to the elliptic shape of traveler as being a shape particularly suiting the conditions imposed, and the elliptic traveler which has been more or less dormant for some years, has now come into favor as a; traveler shape which meets many of the changed conditions better than a traveler of conventional shape.

The elliptic traveler as manufactured in this way of meeting or eliminating the abrasive ac- 15V tion of the more abrasive yarns, such as rayon or silk, on the traveler andwlu'ch action considerably shortened the useful life of the traveler'.

With th-ese conditions in mind, my present invention contemplates a traveler of conventional 29 elliptic shape but having its center of gravity of the elliptic traveler lowered to a point where the traveler will ride the ring in true balance.

` In accomplishing this, without sacrifice of any other feat-ure necessary to adequate traveler per- 25. ormance, I reduce the cross sectional area of the material of the bow in any suitable manner, as by slotting, milling or grooving the bow. This lowers the center of gravity of the traveler to a point-considerably below that of the elliptic trav- 30 eler as heretofore manufactured and imparts to to the traveler a stability of equilibrium which enables it to assume a more truly iloating position on the ring and to traverse the ring with the minimum of frictional contact. 35.,

With my traveler the center of gravity is lowto a point Well within the ring flange instead of above it as with the conventional elliptic traveler, and hence the principal zone of wearing contactl between the traveler and the ring is no 401" longer between the innermost traveler horn and the adjacent edge of the ring flange or ring webbut is a zone 'of momentary contact between the underiacev of the traveler bow and the top face of the ring ange. v ,15.l

As a result of reducing the cross sectional area of the material of the traveler bow, the travelerV shows a denite superiority over the convential elliptic traveler in respect to its useful life, due

to the fact that in the heat treatment step ofv 50..

rthe cross sectional area of. the traveler bow and Fig. 1 is an enlarged elevation of a'. convention elliptic traveler in which the cross-sectional area of the material of the bow has been reduced by slotting the same. e

Fig. 2 shows the same in operative position upon a ring.

Fig. 3 is a perspective view of Fig. 1.

Fig. 4 shows a variant in which the cross sectional area of the material of the bow has been reduced by milling olf equal amounts at opposite edges of the bow.

Fig. 5 shows a variant in which such reduction has been accomplished by milling transversely across the bow.

Fig. 6 shows a variant combining the disclosuresvof-Figs. 4 and 5. f

Fig. 7 shows a variant combining the disclosures'rof Figs. 3 and 4 and Fig. 8 shows a still further variant wherein the cross sectional area of the material of the bow is reduced in any of the foregoing manners and wherein additionally the bow is given a concavo convex configuration with the convexity disposed towards the ring flange so as to present a smooth rounded under surface to the yarn.

Referring to Figs. 1 and 2 I have indicated generally at l a traveler of conventional elliptic shape and at il the ring flange of a ring l2 of standard type. The elliptic bow of the traveler is indicated at Hl, the traveler terminals at l5, and the arched lateral portions which connect the bow and terminals at l 6.

In all embodiments of my invention the cross sectional area of the material of the bow is reduced so as to accomplish a definite lowering of the center of gravity G of the traveler. Withrny traveler thecenter of gravity G is a point which substantially coincides with the center of symmetry S of the traveler, (see Fig 1) being in fact only slightly above the same. For purposes of comparison I have indicated at G the centery of gravity of the conventional elliptic traveler or expressed differently the point G' represents the center of gravity of the conventional elliptic traveler before the bow area of such traveler has been reduced by the removal of an amount of metal sufficient to lower the same to thepoint G, as in my new traveler. The distance between the points G and G' may therefore be said to represent substantially the extent to which I have succeeded in lowering the center of gravity of the standard elliptic'traveler.

Referring to Fig. 2 it will be noted that the center of gravity G of my new traveler lies well,

within the ring ange instead of near the top or above it as heretofore. Hence the new traveler rides the ring with a truly floating action and with the minimum of friction. Such friction as does occur comes essentially between the underface of the traveler bow and the upper face ofl the ring iiange, substantially to the exclusion of any wearing contact between the innermost terminal of the traveler and the inner edge of the ring flange. For convenience of reference this zone of momentary contact has been designated in these drawings at i3.

In Figs. 1, 2, and 3 the reduction of the cross sectional area of the material of the bow is accomplished by slotting the same as indicated at I1. It will be understood that there may be more thanv one slot although I prefer to use a single slot Vand disposed symmetrically of the bow from top to bottom thereof.

In Fig. 4 equal portions at the opposite edges of the bow are removed as by longitudinally milling the same at I8.

In Fig. the traveler bow is milled transversely as indicated' atv i9.

In Fig. 6 the traveler bow is both milled along its edges at i8 an-d transversely as at i9.

lowering of the center of gravitybut by reason of the reduction in the cross sectional area of the bow as compared with the 'remaining areas of the traveler the traveler in the heat treating step takes on additional hardness or durability and better temper and hence has a longer life in use.

What I therefore claim and desire to secure by Letters Patent isz- `1.fA symmetrical traveler for use on a ring having a horizontal flange, consisting of an elliptical member having a bow portion whichV is curved to provide sumcient clearance between the ring ange and itself to permit use with bulky yarns, relatively straight terminal portions disposed in substantially a single plane for a part of their length and adapted to be positioned beneath the ring ange, and curved connecting portions joining sai-d curved .bow and terminal portions, some -of the material in the curved bow being removed to reduce the cross-sectional area of the material of the bow and thereby increase the hardness of the terminal portions and improve the springiness of the bow portion resulting from heat treatment thereof and to lower the center of gravity of the traveler to a point within the ring flange.

2. A traveler of claim 1, said Vtraveler having a slot in its bow.

3. 'I'hertraveler of claim 1, said traveler having equal opposite edge portions of the metal of the bow remove-d.

4. The traveler of claim l, said traveler having a portion of the metal removed transverselyv of the bow.

5. 'I'he traveler of claim 1,-said traveler having equal opposite edge portions of the metal of the bow removed and also having a portion of the metal of the bow removed transversely of the. 

